Guys who'll be running the country in the future.

no-one ever really dies.
sort of 'the neptunes', but it's also their motto; even though they release music under their NERD name.
ok, they have 2 names alright?
deal.

Not Even Remotely Dorky

A lifetime of insults because of their superior intellect and supposed lack of social skills. The latter is not always true.
Nerds do have a circle of friends from a variety of stereotypes. They may just prefer their own company, other nerds' company or may not have the time to socialise with others. Or, find other more overbearing people, for example, a jock, overbearing, rude, arrogant, and hypocritical to name a few.
It is also the nerds who invented the tv, computer, radio just amongst a small set of things, which are used in most of today's society for many social, yes, social events, for example, sports and sports clubs, which are used to a jocks' advantage (a touch hypocritical from those jocks who insult nerds)!
Nerds, through use of their brains, ideas, have contributed to a more advanced society, and their inventions and intelligence, despite their constant abuse and insults from others, are being made to good use by many non-nerds, and making their jobs more easier than it once was.
Nerds are often good-hearted people with righteous morals, and don't deserve the negative stereotypes they are betrayed as by jocks in particular.
It is nerds who have made other stereotypes (eg. jocks') jobs that much easier.
If we were all stereotyped the same way, wouldn't that make for a boring world? Or even a thoughtless, immoral one where we all have to be like this, that, etc etc?

A person who gains pleasure from amassing large quantities of knowledge about subjects often too detailed or complicated for most other people to be bothered with.

Often mistaken for Geeks, who aspire to become nerds, yet lack the intelligence, and end up giving nerds a bad name due to their poor social skills.

Non-nerds are often scared of nerds, due to their detailed knowledge, and therefore seemingly high levels of intelligence - and subsequently denegrate them as much as possible as often as possible.

Nerds exist covertly within the fabric of society, often choosing to 'nerd it up' in private or in the company of fellow nerds. It is for this reason they are feared the most - unlike geeks, who are easily identified, nerds can only be found out when casual conversation reaches a subject that they like nerding.

N.E.R.D stands for No One Ever Really Dies. It's our life. N.E.R.D is just a basic belief. People's energies are made of their souls. When you die, that energy may disperse but it isn't destroyed. Energy cannot be destroyed. It can manifest in a different way but even then it's like their souls are going somewhere. If it's going to heaven or hell or even if it's going into a fog or somewhere in the atmosphere to lurk unbeknownst to itself, it's going somewhere." --- Pharrell Williams
Thats from the man himself

Nerd as an insult means "you are smarter then me and that makes me feel inferior so I must cover up my inadequacy by making fun of you".